Number of nonnegative integer arrays of length n+7 with new values 0 upwards introduced in order, no three adjacent elements equal, and containing the value n+1.

A211840

Number of nonnegative integer arrays of length n+7 with new values 0 upwards introduced in order, no three adjacent elements equal, and containing the value n+1.

Terms

    a(0) =3199a(1) =14862a(2) =62617a(3) =231046a(4) =748964a(5) =2166176a(6) =5684153a(7) =13733643a(8) =30929368a(9) =65577913a(10) =131970633a(11) =253759834a(12) =468794569a(13) =835883075a(14) =1444053107a(15) =2425000145a(16) =3969547605a(17) =6349093720a(18) =9943187617a(19) =15274563246a(20) =23053165162a(21) =34230925666

External references